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CCS/MSP432E411Y: Error CORTEX_M4_0: File Loader: Memory write failed: Could not write register xPSR: execution state prevented access

Sven Probst
Expert 1630 points

Part Number: MSP432E411Y
Other Parts Discussed in Thread: EK-TM4C123GXL, MSP-EXP432E401Y, EK-TM4C1294XL, MSP432E401Y

Tool/software: Code Composer Studio

Dear Experts,

I'm just commissioning a new pcb prototype. I use the EK-TM4C123GXL as JTAG adaptor. When using LM-Flasher I'm able to read and verify successfully the processor memory. I can also read the user registers.

When I try to debug the device in CCS I get the following error:

"CORTEX_M4_0: File Loader: Memory write failed: Could not write register xPSR: execution state prevented access"

I checked the hardware signals of the JTAG, they look quite good, thus I don't expect a hardware issue.

What does the error mean? Why is it only with CCS? Any suggestions how to get JTAG running with CCS??

  • 0
    TI__Mastermind 22640 points

    Hello Sven,

    When using CCS, did you set the "Connection" to "Stellaris In-Circuit Debug Interface" in the targetConfigs (.ccxml) file?

    Thanks,

    Sai

  • 0
    TI__Guru**** 171639 points
    Sven,

    The JTAG debug interface of the EK-TM4C123GXL is the old ICDI interface, therefore you have an uncommon scenario - not necessarily bad, but certainly not validated by us.

    The error you are seeing is the inability of the Flash loader in halting the device - it seems it is running free.

    Looking at the Launchpad's schematics I see the ICDI has a reset signal that is tied to the target device's reset pin. Did you connect this signal?

    The reason is that the flash loaders usually require a device reset before loading code.

    Apart from this, I can't think of any other potential problems. If the LMFlasher is capable of flashing the device, then the CCS driver is at fault and will require further investigation.

    Hope this helps,
    Rafael
  • 0 in reply to Sai Reddy
    Prodigy 225 points
    Hello Sai,
    yes, I changed the connection. Tomorrow I'll try to program the MSP-EXP432E401Y with the EK-TM4C123GXL to check, if the problem is related to our pcb ...
  • 0 in reply to desouza
    Prodigy 225 points
    Hello Rafael,
    thank you for the explanation of the error. Yes, the reset signal is connected (at least if the pcb is alright). For now I only read and verified the device content with LMFlasher, tomorrow I'll try to program the device with LMFlasher. Further I'll use the MSP-EXP432E401Y as JTAG adaptor.
    I'll let you know about the results.
  • 0 in reply to Sven Probst
    TI__Guru**** 171639 points
    Sven,

    Thanks; in the meantime I will try to solder some headers to my launchpad and try to make this connection.

    One additional detail that I recall: is your device/connection set to SWD or JTAG? That may make a difference, even between the two utilities.

    Regards,
    Rafael
  • 0 in reply to desouza
    TI__Mastermind 22640 points
    Sven, Rafael,

    I did connect the MSP432E401Y device on the MSP-EXP432E401Y LaunchPad to the Stellaris ICDI on the EK-TM4C1294XL LaunchPad.

    As mentioned by Sven, I was able to program the MSP432E401Y with "LM Flash Programmer" but could not program with CCS.

    I will try to find out why this is not working.

    Sven, if you use XDS110 on MSP-EXP432E401Y LaunchPad to program the MSP432E401Y device on your custom board then it should work.

    Thanks,
    Sai
  • 0 in reply to Sai Reddy
    Prodigy 225 points

    Hello Sai,
    thank you for reproducing my issue. Then I'll switch to the XDS110 to get further with pcb commissioning.
    BTW: How can I set the device/connection to SWD or JTAG? Does the XDS110 / MSP432E411 combination support cJTAG? If yes: which pins are used?

  • 0 in reply to Sven Probst
    Guru 92251 points

    SProbst said:
    How can I set the device/connection to SWD or JTAG?

    There is an option on the Advanced tab of the Target Configuration:

    SProbst said:
    Does the XDS110 / MSP432E411 combination support cJTAG?

    The MSP432E411 doesn't support cJTAG.

  • 0 in reply to Sai Reddy
    Expert 1630 points

    Hello Sai,

    with the MSP-EXP432E401Y JTAG works on the new pcb! Thank you for your help!